[Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - the role of smoke damper] (1) usually was turned on, when the fire closed in the exhaust pipe when the flue gas temperature reaches 280 degrees, and in within a certain amount of time to meet the leakage of smoke and fire integrity requirements smoke damper, smoke fire retardant effect from (2) allows the valve is closed by DC24V power; (electric type smoke damper) (3) or manual reset manually shut down ; (4) closed DC24V electric reset; (automatic type smoke damper for local inconvenience manually operated) (5) of the output signal of the valve is closed, you can interlock with other fire-fighting equipment. [Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - damper damper 280] should be normally open, also known as high-temperature damper damper picture, usually installed in a high-temperature environment ventilation ducts, when the temperature After reaching 280 fusible alloy melting manual control valve, the valve is closed, but you can use the 24V control signals. If that is the 280 smoke damper should be normally closed, install the control center when the fire broke out in the exhaust pipe so that it opens the smoke signals are given when the temperature reaches 280 fusible alloy melts valve is closed, is a two actuations of the valve. Dampers pictures _ Tianjin Jinzhong Ji Alibaba Gold Supplier _ Northern HVAC dampers provided by the Tianjin Jinzhong Ji purification equipment. Tianjin Jinzhong Ji HVAC purification equipment Limited (www.Jzjnt.com) is a leader in Tianjin, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the group leadership with the staff warmly welcome all inquiries negotiations to create a better future for the base.